Defines the minimum length of a password. In setting the minlen attribute, it ensures that passwords meet the required length criteria.
Solution
In /etc/security/user, set the default user stanza minlen attribute to be greater than or equal to 8- chsec -f /etc/security/user -s default -a minlen=8 This means that all user passwords must be at least 8 characters in length.NOTE- If a password length greater than 8 is required, an enhanced password hashing algorithm must be selected. The default crypt algorithm only supports 8 character passwords.